812964309 has 8 divisors (see below), whose sum is σ = 1087170240. Its totient is φ = 540367296.

The previous prime is 812964307. The next prime is 812964319. The reversal of 812964309 is 903469218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 812964309 - 2¹ = 812964307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812964307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401049 + ... + 403070.

It is an arithmetic number, because the mean of its divisors is an integer number (135896280).

Almost surely, 2^812964309 is an apocalyptic number.

It is an amenable number.

812964309 is a deficient number, since it is larger than the sum of its proper divisors (274205931).

812964309 is a wasteful number, since it uses less digits than its factorization.

812964309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804459.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 812964309 is about 28512.5289828875. The cubic root of 812964309 is about 933.3055028975.

The spelling of 812964309 in words is "eight hundred twelve million, nine hundred sixty-four thousand, three hundred nine".